Pavement insert



Juy9, 1929J T. J. BARRETT PAVEMENT INSERT Filed Oct. 4, 1927 2 Sheets-Sheet IUUU RR S.

July 9, 1929. T- 1 BARRET-|- 1,720,162

PAVEMENT I NSERT Filed Oct. 4, 1927 2 Sheets-Sheet 2 u h ll mi um IIB! IIEI 1lb! IIEILIEB.

IN VEN TOR.

A TTORNEYJ' hantai July 9.1929.

UNITED STATES THOIAS JOSEPH'. BARRETT, 0F WASHINGTON CROSSING, PENNSYLVANIA.,

PAVEMENT DISEBT- Application :llcd October 4, 1927. Serial No. 223,933.

The invention relates to pavement inserts and has as an object the provision of a structure which may be imbedded in pavementsto provide tracks for wheels, expansion joint 6 protectors, or .signals in the form of lines to divide traine flowing in opposite directions or letters to give warnings as stop signs, and and as a vreinforced aving brick.

It is a further o ject of the invention to rovide metal reinforced. means which may ge imbedded in the surface of a pavement to provide areas or' increased resistance to wear.

It is a further object of the invention to provide which may be placed over exk pension joints te provi-de increased resistance te wear to theed are su htly con sion o the pe s of the joints and which n ssihle to allow for expanvement at each side of the joint.

It is a in" er object of the invention to provide ins for pavements which may if desired be joined together to protect an extended area of pavement.

It is a further object of the invention to rovide inserts for pavements which have a different appearance :from the remainder of the pavement and which therefore may serve as signals either in the form of a d1viding line to separate oppositely moving traffic or I in the form of letters to indicate a Warning as ao a stop sign.

It is a further object of the invention to provide a metal insert which comprises a body of initially plastic material as an asphalt and sand mixture having metallic elements to preas vent the plastic from pushing into waves and having portions of the metal extending to the surface to reduce wear.

It is a further object of the invention to rovide a method of uniting plastic preormed elements in a pavement.

Further objects of the invention will appear from the following description when read in connection with the accompanying drawings showing illustrative embodiments of the invention and wherein:

Figure 1 is a perspective view 4partly in section; y

F' 2 is a plan view of the metallic elements provided by the invention;

line 3--3 of 60 F' L 3 is a vertical section on Fig:

ig. 4 is a detail plan view o@ a modified form of metallic elements; Y

Fig. 5 ie a detaily perspective view partly in section showing one form of the metallic elements providing com ressibility;

Fig. 6 is a view similar toV Fi re 5 showing a Inodied form of compressb e metallic element;

Fig. 7 is al detail vplan view of the metallic elements of Fig. 5; and

Fig. 8 is a plan view of the metallic elements of a series of letters.

As shown in Figure 1, a pavement is provided preferably of concrete 10 having inserts 11 providing Wheel tracks for vehicles, the

`concrete being formed with a longitudinal expansion joint 12 protected by an insert 13 acting as an expansion joint filler and as a signal line to separate oppositely moving trailic. The insert shown at 13 may be utilized in the place of the usuallines painted upon pavements notably at curves.

As shown in Figures 2 and 3, the metal insert is in the form of bars 14 placed on ed and united by vertical bars 15, 16,v desiab y electricall welded to the lower edges of bars 14. The hars 14 are shown as provided with recesses 17 which are located in staggered relation in successive bars.

The metallic elements of Fi ures 2 and 3 after assembly may be surroun ed by plastic material such as a sand-asphalt mixture coming flush with the top of bars 14 between the recesses 17 and flowing through the -f es; submerging the bars in the recesses as indicatetll in connection with the tracks 11 o f Figure When it is desired to make up an extended surface of pavin by means of the inserts 11 running longitu inally, the ends of the bars 14 are given a complemental V-sha formation as indicated at 18, 19, and running longitudinally ofthe road the plastic material of each insert is made flush with the complemental V-shape formation so that the blocks may be interlocked as shown by Figure 3. When it is desired to place a series of such inserts in union in a pavement, the V-sha l ro'ection and grooves in the edges of t e loc are painted with a material such as asphalt cutack 'with an inflammable solvent such as gasoline and in the process of laci the blocks the outback material isi lted to urn out the solvent and heat the ges of the inserts which are thus welded together when pressed into contact. The presence of the plastic material in which the inserts are im bedded and which forms a portion of the inserts provides a cushion below the edges of the bars 14 and the staggered relation of the recesses 17 will prevent the iowing of the material into waves under the influence of traffic while the metallic projections between the recesses 17 appearing at the surface will act as wear-resistant elements.

The form of expansion joint iiller and signal line shown at 13 is formed with the bars 14 extending longitudinally and the bars 15 placed at intervals beneath the bars 14. It may also be used with a concave surface at short turns, to hold and regulate trailic and when reinforced may be made flat for use of markers and the like lat intersections of the street. Y

The bars 15 are shown as projecting beyond the outer elements 14 whereby they may become imbedded in the concrete as indicated at 20, Figure 1, to retain the insert in position and to serve as dowel pins to preserve the vertical relation between the edges of the blocks upon each side of expansion joint 12. The above method may be used in tracks, when bars as shown in Figure 3 are laid 1on- V gitudinally.

In this form of expansion joint the bars 14a are desirably made of diiferent widths so as to provide la bead with an upwardly curved surface over ,the expansion joint and `being of a dierent appearance from the concrete on each side thereof may be used to replace the usual painted line to divide oppositely moving traiiic.

The form of the invention shown in Figures 5, 6 and 7 may be utilized upon transverse ex ansion joints and is shown formed with a at surface to oi'er no resistance to wheels passing thereover. In the form of Figure 5 the transverse bars 21 are shown as rovided with a slip joint 22 thereby allowing or compressibility of the insert and in this form of the invention also the bars 21 are shown as projecting laterally beyond the outer bars 14 to anchor the insert in the concrete and to serve as dowel pins as already described.

As shown in Figure 6, the bars 23 are formed with inherent compressibility by virtue of the deformation of the bars to provide portions 2e projecting at one side of the bars and forming recesses 25 in the remainin edge of the bars to provide longitudinalflexlbility thereof.

It is to be understood that the bars 21 and 23 are welded to the bars 14 at the lower edges thereof as in the form already described in Figures 1 to 4 inclusive and are imbedded in the plastic materia-l as sand asphalt mixture 26 as in the form first described.

In the form of the invention shown in Figure 8 the inserts are given the form of letters formed of bars 27 laced on edge and having the bars 28 placed elow the same and weldnection between the members of the letter. In

the case of the letter P also one of the bars 28 is shown with an L form at 29 and one of the bars 27 is also shown at 30 to be integral in the vertical and transversely extending portion of the letter. The bars 27 of the letters are desirably formed with the recesses 17 after the manner indicated in Figures 1 to 3 inclusive, 5, 6, and 7.

The inserts provided by the invention ma be assembled at a factory with the aspha t mixture combined therewith and thus preformed may be shipped to the field and iinbedded in the pavement during the laying thereof.

Thev presence of the metal rejections in the surface of the inserts provi ing a surface of differing characteristics will have valuable anti-slip qualities as well as a greater resistance to wear.

Minor changes may be made in the hysical embodiment of the invention within t e scope of the appended claims without departing from the spirit thereof.V

I claim:

1. A preformed reinforced bituminous pavement insert coin rising, in combination, a plurality of space substantially parallel bars placed on edge, a plurality of spaced bars extending below and transversely of said first named bars and rigidi secured to the edges thereof, and a body o bituminous material lling the spaces between said i'irst named bars, terminating flush with the upper edges thereof and extending beiow the lower edges thereof.

2. A preformed reinforced bituminous pavement insert comprising, in combination, a plurality of spaced, substantially parallel barsplaced on ed e, a plurality of spaced bars extending be ow and transversely of said first named bars rigidly secured to the edges thereof and having their ends projecting beyond the outer thereof to anchor in a pavement, and a body of bituminous material filling the spaces between said iirst named bars, terminating flush with the upper edges thereof and extending below the lower edges thereof.

3. A preformed reinforced bituminous pavement insert comprising, in combination, a plurality of substantially parallel spaced bars vplaced on ed e, a plurality of spaced bars extending be ow and transversely of les llO

said first named bars and rigidly secured to the edges thereof, said last named bars provided with formations movable relative to each other under influence of the ex ansion and contraction of a pavement, and abody of bituminous material filling the spaces between said bars, terminating flush with the upper ed es of the first named bars and extending elow the lower edges thereof, whereby to provide a cover for an expansion joint ina pavement.

4. A preformed reinforced bituminous pavement insert comprising, in combination, a plurality of substantially parallel spaced bars placed on edge and extending longitudinally of the insert, said bars progressively increasing in width toward the longitudinal center of the insert and having their lower edges substantially in a common lane, a plurality of spaced bars extending elow and transversely of said first named bars and rigidl secured to the edges thereof and a body o bituminous material filling the spaces between said bars, terminating flush with the upper edges and extending below the lower edges of said first named bars.

THOMAS JOSEPH BARRETT. 

